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ToggleIf you’re cruising through Tamil Nadu, especially around Chennai, chances are you’ll spot a lot of vehicles with TN 18 on their number plates. But what does that really mean?
TN 18 is the official vehicle registration code for Red Hills, a fast-developing suburb in the Chennai district that’s known for its transport connectivity, local markets, and easy access to both city life and rural escapes.
For locals, it’s just another part of daily life. But for travelers, especially those on a road trip or renting a car or bike in the area, it helps to know where your vehicle comes from and what to expect.
Red Hills RTO (TN 18): What Travellers Should Know?
The Regional Transport Office (RTO) in Red Hills isn’t a tourist attraction, but it plays an important role in how vehicles operate here.
Whether you’re renting a car, buying a second-hand bike locally, or simply curious about road systems in Tamil Nadu, this office is the heart of all transport services for TN 18-registered vehicles.
Here’s a quick look at its details:
| Field | Details |
| TN Registration | Regional Transport Office (RTO) |
| Number | TN-18 |
| City | Red Hills |
| District | Chennai |
| State | Tamil Nadu |
| Phone | 044-26310636 |
| CUG Number | 9384808119 |
| rtotn18@nic.in | |
| Address | No.2/37, Chamundi Complex, GNT Road, Red Hills, Chennai – 600052 |
While you probably won’t need to visit the RTO as a traveler, it’s good to know where your vehicle is legally tied to, especially if you’re planning to cross into other districts or states during your road trip.
What Makes TN 18 Relevant for Travellers?

If you’re hiring a vehicle or self-driving around Chennai or Northern Tamil Nadu, the registration number on your ride can tell you more than just a regional code, it reflects where it was issued, how it’s regulated, and which RTO office you should deal with in case of emergencies.
Here’s why TN 18 matters to travellers:
- It’s the code for Red Hills RTO, serving the northern outskirts of Chennai
- If you’re renting from a local provider near Red Hills or Perambur, you’ll likely get a TN 18 vehicle
- It helps traffic officials identify the origin of the vehicle, especially at state borders and toll check posts
- If paperwork or permit checks happen, knowing your RTO region is incredibly useful
Whether you’re planning a trip toward Pulicat Lake, taking NH16 toward Andhra Pradesh, or exploring local temples and food joints in North Chennai, chances are your vehicle will be TN 18-registered, and that links you to a key administrative zone in Tamil Nadu’s transport system.
Other RTO Codes in Chennai You Might See
Chennai is a huge metropolitan area, and its road network is divided among several RTO zones.
So while TN 18 covers Red Hills, you might also come across:
- TN 01: For vehicles from Chennai Central
- TN 02: For vehicles from Chennai North
- TN 09: For vehicles from Chennai West
- TN 22: For vehicles from Meenambakkam
- TN 13: For vehicles from Ambattur
This breakdown helps officials manage traffic, registration, and services better. For travellers, it’s just another glimpse into how well-structured and organized Tamil Nadu’s road transport system really is.
FAQs
Is TN 18 linked to a specific part of Chennai?
Yes, TN 18 is the vehicle registration code assigned to the Red Hills area in the Chennai district. It covers the northern outskirts and suburbs of the city.
Can tourists rent TN 18-registered vehicles in Chennai?
Definitely! Many car and bike rental services in and around Red Hills and North Chennai offer TN 18 vehicles for both domestic and international travelers.
Do I need to visit the TN 18 RTO office as a traveller?
Not usually. Unless you’re handling legal paperwork like ownership transfer or permit renewals, most tourists won’t need to stop by the RTO.
Is it safe to drive around Red Hills as a foreigner?
Yes, Red Hills is a well-traveled area with good roads and access to highways. Just be cautious during peak hours and follow local traffic rules.
How do I know if my rental vehicle is from TN 18?
Check the number plate, if it starts with TN 18, it’s registered under Red Hills RTO. This means it’s legally tied to the Chennai district.
What are the office hours for the Red Hills RTO (TN 18)?
The TN 18 RTO usually operates Monday to Friday, 9:30 AM to 5:30 PM, and Saturdays until 1 PM. It’s closed on Sundays and public holidays.
Will TN 18 vehicles face checks at state borders?
Sometimes, yes, especially when crossing into other states or during special permit drives. Having your documents ready makes the process smooth and hassle-free.







